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Finding the Fourth Proportional to 5,328,862.80, 7,984,108.80 and 2,483,138.40

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Solution

The fourth proportional to 5,328,862.80, 7,984,108.80 and 2,483,138.40 is: 3,720,427.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,328,862.80 : 7,984,108.80 = 2,483,138.40 : x
  2. Step 2: Convert to fraction form
    5,328,862.80/7,984,108.80 = 2,483,138.40/x
  3. Step 3: Cross multiply
    5,328,862.80x = 7,984,108.80 × 2,483,138.40
  4. Step 4: Simplify right side
    5,328,862.80x = 19,825,647,151,057.92
  5. Step 5: Solve for x
    x = 19,825,647,151,057.92/5,328,862.80
  6. Step 6: Final answer
    x = 3,720,427.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.